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Hydraulic Design of Spillway Plunge Pool Linings

by Peter J. Rae, (M.ASCE), Acres Int Ltd, Niagara Falls, Canada,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

The design of plunge pools for high head spillways with flip bucket terminal structures often requires a detailed examination of the stability of the resulting scour hole in the river valley. In many cases, the most economical solution is to allow the plunge pool to develop naturally with the ultimate extent and rate of growth limited by the hydrology, geology and the physical characteristics of the spillway layout. This approach is often combined with either partial or complete pre-excavation of a plunge pool. Geological and hydrological conditions may result in the need to provide some lining of the plunge pool to protect weak rock zones or rock support systems.

Subject Headings: Scour | Hydraulic design | Spillways | Linings | Hydrology | Geology | Structural design

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